基于声振传递的飞行器噪声振动环境预示方法研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (1) : 290-296.

论文

李炳蔚 1，朱红民 1，刘时秀 2，陈刚 3

作者信息 +

A method for predicting aircraft noise and vibration environment based on acoustic and vibration transmission

LI Bingwei1, ZHU Hongmin1, LIU Shixiu2, CHEN Gang3

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文章历史 +

摘要

针对高速飞行器飞行条件下的噪声、振动环境恶劣、复杂、难预示的问题，提出了基于声振传递的飞行器飞行条件下的噪声、振动环境预示方法。首先，采用数值仿真、脉动压力风洞试验或工程分析等方法，获取飞行器在典型工况下的舱外脉动压力场；然后，通过噪声试验或声振耦合仿真分析的方法，得到飞行器声振传递特性；最后，根据获得的舱外脉动压力和声振能量传递特性，结合具体飞行参数得到实际飞行条件下的飞行器声振预示环境。采用本文提出的方法对某飞行器开展了振动环境预示研究，经地面及飞行试验验证振动环境量级预示精度可达1.6dB。本文提出的基于声振传递的飞行声振环境预示方法可以广泛应用在导弹、火箭等飞行器的精细化环境设计中，对于提高飞行器总体性能、环境适应性和飞行可靠性具有重要的工程意义。

Abstract

High-speed aircraft undergoes noise and vibration environment during the flight mission, and the environment is severe, complex, and difficult to predict. Therefore, a noise and vibration environment prediction method based on sound and vibration transmission is proposed. Firstly, the extravehicular fluctuating pressure field of aircraft under typical flying conditions is obtained by means of numerical simulation, fluctuating pressure wind tunnel test or engineering analysis. Secondly, through noise test or sound-vibration coupling simulation analysis, the sound-vibration transmission characteristics of aircraft are obtained. Finally, according to the obtained extravehicular pulsating pressure and sound and vibration energy transfer characteristics, combined with the specific flight parameters, the aircraft noise and vibration environment under the actual flight conditions is predicted. The method proposed in this paper is used to study the vibration environment prediction of an aircraft. It is verified by ground and flight tests that the prediction accuracy of vibration environment can reach 1.6dB. The prediction method of flight sound and vibration environment based on sound and vibration transmission proposed in this paper can be widely used in the fine environment design of missiles, rockets and other aircraft. It has important engineering significance for improving the overall performance, environmental adaptability and flight reliability of aircraft.

关键词

声振传递 / 飞行器 / 声振环境 / 环境预示 / 飞行环境 / 脉动压力

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李炳蔚 1，朱红民 1，刘时秀 2，陈刚 3. 基于声振传递的飞行器噪声振动环境预示方法研究[J]. 振动与冲击, 2024, 43(1): 290-296

LI Bingwei1, ZHU Hongmin1, LIU Shixiu2, CHEN Gang3. A method for predicting aircraft noise and vibration environment based on acoustic and vibration transmission[J]. Journal of Vibration and Shock, 2024, 43(1): 290-296

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